Scintillation and phosphorescence of PbWO4 crystals
Masaaki Kobayashi,Mitsuru Ishii,Kenji Harada,Yoshiyuki Usuki,Hideki Okuno,Hajime Shimizu,Tatsuya Yazawa +6 more
TLDR
In this paper, it was shown that the characteristic scintillation of PbWO4 is dominantly blue and subdominantly green, and that the phosphorescence with a decay constant of about 15 ms exists only in Type B at about 500 nm.Abstract:
There are two types of crystals with respect to luminescence. In dc measurement, type A gives a primary emission at 410–430 nm (blue) with a second one at around 500 nm. Type B gives only dominant emission at 480–500 nm (green). This apparent difference can be interpreted as follows; the characteristic scintillation of PbWO4 is dominantly blue and subdominantly green. Intense phosphorescence with a decay constant of about 15 ms exists only in Type B at about 500 nm with one to two orders of magnitude larger intensity than scintillation, hiding the blue scintillation in its tail. The cause of the phosphorescence may be Mo.read more
Citations
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Journal ArticleDOI
Wide Band Gap Scintillation Materials: Progress in the Technology and Material Understanding
TL;DR: In this paper, the scintillation characteristics of four selected material systems, namely CsI:Tl(Na), CeF 3, PbWO 4 and Ce-doped aluminium perovskites XAIO 3 :Ce (X=Y, Lu, Y-Lu) are reviewed.
Journal ArticleDOI
Radiation damage in scintillating crystals
TL;DR: In this article, the authors discuss the effect of radiation on scintillating crystals and conclude that the predominant radiation damage in crystal scintillation is the radiation-induced absorption, or color center formation, not the loss of scINTillation light yield.
Journal ArticleDOI
Radiation induced formation of color centers in PbWO4 single crystals
Martin Nikl,Karel Nitsch,S. Baccaro,Angelica Cecilia,Marco Montecchi,B. Borgia,I. Dafinei,Marcella Diemoz,Marco Martini,E. Rosetta,Giorgio Spinolo,Anna Vedda,Masaki Kobayashi,Mitsuru Ishii,Y. Usuki,O. Jarolimek,P. Reiche +16 more
TL;DR: In this paper, the changes in the absorption spectra induced by Co60 irradiation and high temperature annealing were studied for selected PbWO4 crystals, and four color centers were proposed, namely Pb3+, O−, F, and F+ centers.
Journal ArticleDOI
Improvement in transmittance and decay time of pbwo4 scintillating crystals by la-doping
Masaaki Kobayashi,Y. Usuki,Mitsuru Ishii,Tatsuya Yazawa,Kazuhiko Hara,Masaaki Tanaka,Martin Nikl,K. Nitsch +7 more
TL;DR: In this article, the optical transparency of PbWO 4 single crystals in the short wavelength region between 320 nm (cutoff) and 450 nm is significantly improved by doping with a small amount of La.
Journal ArticleDOI
Decay kinetics and thermoluminescence of PbWO4 : La3+
Martin Nikl,Pavel Boháček,K. Nitsch,Eva Mihokova,Marco Martini,Anna Vedda,S. Croci,G. P. Pazzi,P. Fabeni,S. Baccaro,B. Borgia,I. Dafinei,Marcella Diemoz,G. Organtini,E. Auffray,P. Lecoq,Masaki Kobayashi,Mitsuru Ishii,Y. Usuki +18 more
TL;DR: In this paper, the influence of La doping on the PbWO4 lattice was discussed in the light of the direct influence on suppressing the creation of point defect centers in the lattice, which are involved in energy transfer and storage processes in this material.
References
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Journal ArticleDOI
Some new observations on the luminescence of PbMoO4 and PbWO4
J.A. Groenink,G. Blasse +1 more
TL;DR: In this paper, the luminescence of doped and undoped PbMoO4 and PbWO4 single crystals was measured and assigned to the 3T11A1 transition in the tetrahedral MoO42−(WO42+) group.
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Scintillation characteristics of PbWO4 single crystals at room temperature
TL;DR: In this paper, the authors show that PbWO 4 at room temperature shows a narrow excitation peak around 325 nm with the FWHM as small as 10 nm and a broad emission peak around 420-440 nm.
Journal ArticleDOI
Single crystals of tungsten compounds as promising materials for the total absorption detectors of the e.m. calorimeters
Vladimir G. Baryshevsky,Mikhail Korzhik,V.I. Moroz,V.B. Pavlenko,A.S. Lobko,A.A. Fyodorov,Vassili Kachanov,V.L. Solovjanov,B.I. Zadneprovsky,V.A. Nefyodov,P.V. Nefyodov,B.A. Dorogovin,L.L. Nagornaja +12 more
TL;DR: Some characteristics including radiation resistance of PbWO 4, NaBi(WO4 ) 2 and KYb(wO 4 ) 2 crystals, which are promising for application in detectors at new accelerators and colliders are described in this article.
Journal ArticleDOI
Lead fluoride: An ultra-compact Cherenkov radiator for em calorimetry
TL;DR: In this article, the material PbF2 has been tested and found to be a Cherenkov radiator suitable for electromagnetic calorimetry, with a density of 7.77 g/cm3, a radiation length of 0.93 cm and an optical cutoff at about 280 nm.
Journal ArticleDOI
Beam test of a calorimeter prototype of PWO crystals at energies between 0.5 and 2.5 GeV
Susumu Inaba,Makoto Kobayashi,M. Nakagawa,Takemi Nakagawa,Hajime Shimizu,Kunio Takamatsu,Tsuneaki Tsuru,Yoshiji Yasu +7 more
TL;DR: The results of a beam test are presented in this article concerning the energy resolution of a calorimeter hodoscope prototype of PWO (PbWO4) crystals, measured by electron beams having energies between 0.5 and 2.5 GeV.